0D/1D heterostructured Au@CuO/CuO/Cu(OH) with multivalent Cu()/Cu() for efficient and bendable glucose sensing

With the rapid development of glucose sensor devices in recent years, it is critical to obtain a highly sensitive and low-cost sensing material by a facile method. In this study, 0D/1D heterostructured Au@Cu 2 O/CuO/Cu(OH) 2 with multivalent Cu( i )/Cu( ii ) was prepared as an efficient electrocatalyst for glucose sensing by using a simple one-pot wet chemical method. Au@Cu 2 O/CuO/Cu(OH) 2 exhibited a sensitivity of 1024.6 μA mM −1 cm −2 and a detection limit of 0.26 μM toward glucose sensing, which was 1.57 times higher than that of pure Au@Cu 2 O NPs and 123.2 times higher than that of pure Au/Cu(OH) 2 . The excellent performance of Au@Cu 2 O/CuO/Cu(OH) 2 can be attributed to the synergistic effect of excellent charge transport brought by the Cu(OH) 2 nanowire and the rapid mass transfer capability resulting from the multivalent Cu-based oxides during the glucose sensing process. In addition, the obtained Au@Cu 2 O/CuO/Cu(OH) 2 exhibited excellent stability and bending stability toward glucose sensing, revealing its great potential for practical applications in the field of wearable sensors. Efficient, bending-stable glucose sensing nanocomposite electrode materials can be prepared by a simple one-pot method.